Panel



FIG. 1 is a perspective view of a panel showing my new design, thebroken lines showing a clear air enclosure is for illustrative purposesonly and form no part of the claimed design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a side elevational view, the opposite side being a mirrorimage thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The ornamental design for a panel, as shown and described.